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mario62 [17]
2 years ago
8

Urgent help needed in number four.Thank you in advance!​

Physics
1 answer:
likoan [24]2 years ago
6 0

The energy produced by the headlamp at the end of 5 minutes is determined as 1,440 J.

<h3>Energy supplied by the lamp</h3>

The energy supplied by the lamp is calculated as follows;

E = Pt

E = IVt

where;

  • I is current = 0.4 A
  • V is voltage = 12 V
  • t is time = 5 mins = 5 x 60 s = 300 s

E = 0.4 x 12 x 300

E = 1,440 J

Thus, the energy produced by the headlamp at the end of 5 minutes is determined as 1,440 J.

Learn more about energy here: brainly.com/question/25959744

#SPJ1

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mgh-Fh= 0.5mv^{2}= KE

Substituting 10 Kg for m, 9.81 for g and 60 m for F then the kinetic energy at the bottom will be

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A block of mass m = 2.0 kg slides head on into a spring of spring constant k = 260 N/m. When the block stops, it has compressed
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b) Wf = 1.153 J

c) v = 1.923 m / s

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Answer:

The final temperature of the two objects is the same.

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The expression for the heat energy in terms of mass, specific heat and the change in the temperature is as follows:

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Here, Q is the heat energy, m is the mass of the object, c is the specific heat and T_{f},T_{i} are the final temperature and initial temperature.

According to the given question, Two objects of the same mass, but made of different materials, are initially at the same temperature. Equal amounts of heat are added to each object.

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Q=mc(T'_{f}-T_{i})                                            .............(2)

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